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Identifying the major intermediate species by combining time-resolved X-ray solution scattering and X-ray absorption spectroscopy.

Physical chemistry chemical physics : PCCP

Kim KH, Kim J, Oang KY, Lee JH, Grolimund D, Milne CJ, Penfold TJ, Johnson SL, Galler A, Kim TW, Kim JG, Suh D, Moon J, Kim J, Hong K, Guérin L, Kim TK, Wulff M, Bressler C, Ihee H.
PMID: 26300122
Phys Chem Chem Phys. 2015 Sep 28;17(36):23298-302. doi: 10.1039/c5cp03686k.

Identifying the intermediate species along a reaction pathway is a first step towards a complete understanding of the reaction mechanism, but often this task is not trivial. There has been a strong on-going debate: which of the three intermediates,...

Tunable kinoform x-ray beam splitter.

Optics letters

Lebugle M, Seniutinas G, Marschall F, Guzenko VA, Grolimund D, David C.
PMID: 29088155
Opt Lett. 2017 Nov 01;42(21):4327-4330. doi: 10.1364/OL.42.004327.

We demonstrate an x-ray beam splitter with high performances for multi-kilo-electron-volt photons. The device is based on diffraction on kinoform structures, which overcome the limitations of binary diffraction gratings. This beam splitter achieves a dynamical splitting ratio in the...

Localized holes and delocalized electrons in photoexcited inorganic perovskites: Watching each atomic actor by picosecond X-ray absorption spectroscopy.

Structural dynamics (Melville, N.Y.)

Santomauro FG, Grilj J, Mewes L, Nedelcu G, Yakunin S, Rossi T, Capano G, Al Haddad A, Budarz J, Kinschel D, Ferreira DS, Rossi G, Gutierrez Tovar M, Grolimund D, Samson V, Nachtegaal M, Smolentsev G, Kovalenko MV, Chergui M.
PMID: 28083541
Struct Dyn. 2016 Dec 15;4(4):044002. doi: 10.1063/1.4971999. eCollection 2017 Jul.

We report on an element-selective study of the fate of charge carriers in photoexcited inorganic CsPbBr

Identification of Cr species at the aqueous solution-hematite interface after Cr(VI)-Cr(III) reduction using GI-XAFS and Cr L-edge NEXAFS.

Journal of synchrotron radiation

Grolimund D, Trainor TP, Fitts JP, Kendelewicz T, Liu P, Chambers SA, Brown GE.
PMID: 15263398
J Synchrotron Radiat. 1999 May 01;6:612-4. doi: 10.1107/S0909049598016513. Epub 1999 May 01.

No abstract available.

Statistical moments of backscattered ultrasound in porous fiber reinforced composites.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Grolemund D, Tsai CS.
PMID: 18244181
IEEE Trans Ultrason Ferroelectr Freq Control. 1998;45(2):295-304. doi: 10.1109/58.660140.

Statistical moments are important tools for understanding wave propagation in random media and are applied here to backscatter measurements in porous, fiber-reinforced polyimide composites. High temperature resins, such as PMR-15, used in load critical components are much more prone...

Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions.

Structural dynamics (Melville, N.Y.)

Cannelli O, Bacellar C, Ingle RA, Bohinc R, Kinschel D, Bauer B, Ferreira DS, Grolimund D, Mancini GF, Chergui M.
PMID: 31832487
Struct Dyn. 2019 Dec 11;6(6):064303. doi: 10.1063/1.5129626. eCollection 2019 Nov.

Most chemical and biochemical reactions in nature and in industrial processes are driven by thermal effects that bring the reactants above the energy barrier for reaction. In aqueous solutions, this process can also be triggered by the laser driven...

Intracellular bound chlorophyll residues identify 1 Gyr-old fossils as eukaryotic algae.

Nature communications

Sforna MC, Loron CC, Demoulin CF, François C, Cornet Y, Lara YJ, Grolimund D, Ferreira Sanchez D, Medjoubi K, Somogyi A, Addad A, Fadel A, Compère P, Baudet D, Brocks JJ, Javaux EJ.
PMID: 35013306
Nat Commun. 2022 Jan 10;13(1):146. doi: 10.1038/s41467-021-27810-7.

The acquisition of photosynthesis is a fundamental step in the evolution of eukaryotes. However, few phototrophic organisms are unambiguously recognized in the Precambrian record. The in situ detection of metabolic byproducts in individual microfossils is the key for the...

Spatial displacement of forward-diffracted X-ray beams by perfect crystals.

Acta crystallographica. Section A, Foundations and advances

Rodriguez-Fernandez A, Esposito V, Sanchez DF, Finkelstein KD, Juranic P, Staub U, Grolimund D, Reiche S, Pedrini B.
PMID: 29493536
Acta Crystallogr A Found Adv. 2018 Mar 01;74:75-87. doi: 10.1107/S2053273318001419. Epub 2018 Feb 23.

Time-delayed, narrow-band echoes generated by forward Bragg diffraction of an X-ray pulse by a perfect thin crystal are exploited for self-seeding at hard X-ray free-electron lasers. Theoretical predictions indicate that the retardation is strictly correlated to a transverse displacement...

High spatial resolution quantitative imaging by cross-calibration using Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Synchrotron micro-X-ray Fluorescence technique.

Chimia

Wang HA, Grolimund D, Van Loon LR, Barmettler KD, Borca CN, Aeschlimann B, Günther D.
PMID: 22613155
Chimia (Aarau). 2012;66(4):223-8. doi: 10.2533/chimia.2012.223.

High spatial resolution, quantitative chemical imaging is of importance to various scientific communities, however high spatial resolution and robust quantification are not trivial to attain at the same time. In order to achieve microscopic chemical imaging with enhanced quantification...

Grazing-incidence XAFS studies of aqueous Zn(II) on sapphire single crystals.

Journal of synchrotron radiation

Trainor TP, Fitts JP, Grolimund D, Bargar JR, Brown GE.
PMID: 15263400
J Synchrotron Radiat. 1999 May 01;6:618-20. doi: 10.1107/S0909049598017038. Epub 1999 May 01.

No abstract available.

Grazing-incidence XAFS investigations of Cu(II) sorption products at alpha-Al2O3-water and alpha-SiO2-water interfaces.

Journal of synchrotron radiation

Fitts JP, Trainor TP, Grolimund D, Bargar JR, Parks GA, Brown GE.
PMID: 15263403
J Synchrotron Radiat. 1999 May 01;6:627-9. doi: 10.1107/S0909049599001375. Epub 1999 May 01.

No abstract available.

Quantitative chemical imaging of element diffusion into heterogeneous media using laser ablation inductively coupled plasma mass spectrometry, synchrotron micro-X-ray fluorescence, and extended X-ray absorption fine structure spectroscopy.

Analytical chemistry

Wang HA, Grolimund D, Van Loon LR, Barmettler K, Borca CN, Aeschlimann B, Günther D.
PMID: 21623637
Anal Chem. 2011 Aug 15;83(16):6259-66. doi: 10.1021/ac200899x. Epub 2011 Jul 15.

Quantitative chemical imaging of trace elements in heterogeneous media is important for the fundamental understanding of a broad range of chemical and physical processes. The primary aim of this study was to develop an analytical methodology for quantitative high...

Showing 1 to 12 of 50 entries